Year Measure
1764 810.4
1765 812.8
1766 815.2
1767 817.7
1768 820.1
1769 822.6
1770 825
1771 826.5
1772 827.9
1773 829.4
1774 830.9
1775 832.3
1776 833.8
1777 835.3
1778 836.7
1779 838.2
1780 839.7
1781 841.2
1782 842.7
1783 844.2
1784 845.7
1785 847.2
1786 848.7
1787 850.2
1788 851.7
1789 853.2
1790 854.7
1791 856.2
1792 857.7
1793 859.2
1794 860.7
1795 862.3
1796 863.8
1797 865.3
1798 866.8
1799 868.4
1800 869.9
1801 871.5
1802 873
1803 874.5
1804 876.1
1805 877.6
1806 879.2
1807 880.7
1808 882.3
1809 883.9
1810 885.4
1811 887
1812 888.6
1813 890.1
1814 891.7
1815 893.3
1816 894.9
1817 896.4
1818 898
1819 899.6
1820 901.2
1821 905.7
1822 910.2
1823 914.8
1824 919.4
1825 923.9
1826 928.6
1827 933.2
1828 937.9
1829 942.5
1830 947.3
1831 952
1832 956.7
1833 961.5
1834 966.3
1835 971.2
1836 976
1837 980.9
1838 985.8
1839 990.7
1840 995.7
1841 1001
1842 1006
1843 1011
1844 1016
1845 1021
1846 1026
1847 1031
1848 1036
1849 1041
1850 1047
1851 1052
1852 1057
1853 1062
1854 1068
1855 1073
1856 1078
1857 1084
1858 1089
1859 1095
1860 1100
1861 1105
1862 1111
1863 1117
1864 1122
1865 1128
1866 1133
1867 1139
1868 1145
1869 1150
1870 1156
1871 1167
1872 1177
1873 1166
1874 1155
1875 1143
1876 1132
1877 1122
1878 1111
1879 1100
1880 1110
1881 1124
1882 1139
1883 1154
1884 1169
1885 1184
1886 1199
1887 1215
1888 1231
1889 1247
1890 1263
1891 1279
1892 1296
1893 1313
1894 1330
1895 1347
1896 1365
1897 1383
1898 1401
1899 1419
1900 1437
1901 1456
1902 1475
1903 1494
1904 1513
1905 1533
1906 1553
1907 1573
1908 1594
1909 1614
1910 1635
1911 1657
1912 1678
1913 1700
1914 1606
1915 1517
1916 1434
1917 1354
1918 1280
1919 1209
1920 1142
1921 1079
1922 1020
1923 963.2
1924 1140
1925 1257
1926 1445
1927 1300
1928 1413
1929 1607
1930 1648
1931 1712
1932 1578
1933 1751
1934 1758
1935 1759
1936 2051
1937 2075
1938 2211
1939 2318
1940 2133
1941 1913
1942 1968
1943 1762
1944 1663
1945 1418
1946 1783
1947 1834
1948 2027
1949 1873
1950 1995
1951 2186
1952 2376
1953 2564
1954 2415
1955 2527
1956 2523
1957 2631
1958 2655
1959 2681
1960 2666
1961 2626
1962 2706
1963 2880
1964 2920
1965 2918
1966 3176
1967 3234
1968 3363
1969 3449
1970 3524
1971 3744
1972 3879
1973 3938
1974 4138
1975 4381
1976 4636
1977 4715
1978 4730
1979 4578
1980 4437
1981 4503
1982 4602
1983 4645
1984 4785
1985 4901
1986 5113
1987 5425
1988 5503
1989 5438
1990 5808
1991 5733
1992 5946
1993 6290
1994 5827
1995 6125
1996 6432
1997 6791
1998 6877
1999 6443
2000 6803
2001 6193
2002 6578
2003 6856
2004 7357
2005 7786
2006 8223
2007 8507
2008 8457
2009 7942
2010 8556
2011 9165
2012 9287
2013 9488
2014 9728
2015 10030
2016 10360
2017 10700
2018 11070